Just think, if you kept pouring water into a colander and expected it to ever fill up, that's what it's like putting an MVHR system in your house and expecting it to heat up when it is full of holes.
I've recently been testing quite a few houses and apartments with Mechanical Ventilation Heat Recovery (MVHR) systems in them. Most are doing okay for the regulations and meeting their Design Air Permeability. Only one set of apartments that I've done recently has been below 4 m3/(h.m2) which is probably starting to get to the optimum range, the lower the better by the way.
Most are getting around 8 m3/(h.m2) and this is not benefiting the user of the system. The intention of these types of systems is to exchange the heat, ventilate the home, and save energy versus gas or electric heating systems. If you are only giving the system cold outside air to work with, it's going to have to work much harder to give the same benefit compared to an airtight house.
So, if you have stumbled across this blog because you're having problems with your MVHR system not working to its optimum performance, maybe you should get your house looked at by someone like me. We can highlight where things are going bad, and improve your system performance significantly.
I hope that this helps you along the way.
Matt
www.hometestingyorkshire.co.uk
I've recently been testing quite a few houses and apartments with Mechanical Ventilation Heat Recovery (MVHR) systems in them. Most are doing okay for the regulations and meeting their Design Air Permeability. Only one set of apartments that I've done recently has been below 4 m3/(h.m2) which is probably starting to get to the optimum range, the lower the better by the way.
Most are getting around 8 m3/(h.m2) and this is not benefiting the user of the system. The intention of these types of systems is to exchange the heat, ventilate the home, and save energy versus gas or electric heating systems. If you are only giving the system cold outside air to work with, it's going to have to work much harder to give the same benefit compared to an airtight house.
So, if you have stumbled across this blog because you're having problems with your MVHR system not working to its optimum performance, maybe you should get your house looked at by someone like me. We can highlight where things are going bad, and improve your system performance significantly.
I hope that this helps you along the way.
Matt
www.hometestingyorkshire.co.uk
Thanks for your great information. We all appreciate your information. Keep posting these kind of nice blogs.
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